Sharpening-machine.



A. KRAUTH.`

SHARPENING MACHINE.

APPLICATION FILED sEPr.1o. 1915.

l ,26 l l 3 6 Patented Apr. 2, 1918.

2 SHEETS-SHEET I A` KRAUTH.

SHAHPEMNG MACHINE.

AVPULAIION HLED SEPT. l0. i915.

LQGLl 36. mented Apr. 191s,

2 SHEETS--SHEET 2.

wmeooaa ALBERT Urn, or HAMILTON, oHIo.

SHABPENING-MAGHDTE To all/whom t may concern:

Be it knownV that I, ALBERT KRAUTH, a citizenv of the United States,andresiding at Hamilton, in the county of Butler andState of Ohio, haveinvented a new and useful Improvement in Sharpening- Machines, of

which the following specification is a' full operated through thetransmission devices for rotating the cutter.

Other features and advantages will be i moreVfiillysetfthin'thedescription of the accompanying drawings, forming apart hereof, and disclosing a preferred embodiment of the invention, andin such drawings, like characters of reference denote correspondingparts throughout the several views, of which:

Figure 1 is a top plan view of the complete slicingmachine. 4

Fig. 2 is a longitudinal vertical sect1on.

Fig. 3 is a front rear elevation.

Fig. 4 is a det-ail section on line 4-4,

Fig. 1.

Fig. 5 is a detail elevation of the table.

In the machine. illustrated in the drawings, the material te be slicedis manually fed or slid over stationary table sections relativelydisposed at different elevations to a degree proportionate. to thethickness of sliceto be delivered by the machine. A ro tative knifeintervenes the `table sections to intercept and cut the material bulkasit is fed or slid from one 'table section 'to and upon the secondtable section, the cutting edge of the knife being substantially flushwith the upper surface of the'second table section during its rotativetravel throughA the cutting zone. Upon being returned to the first tablesection, the material bulk descends by gravity to a successive .slicecutting elevation, the first table section being vertically adjustableto determine the slice thickness.

The first or front table section is provided with a surface' plate 32 ofglass or similar material adjustably and detachably Specification ofLetters Patent.

secured thereto by an improved form of retaining means, and an improvedform of knife sharpening attachment is provided for grinding orsharpening the knife when necessary.

rlhe frame of the machine consists of two parallel side rails l, having`circular rear ends 2, which form a housing'for the circular knife 3.These rails are integrally joined by cross-webs 4;, 5,6, and areprovided With suitable supporting legs 7.

The circular knife 3 is a steel casting of dish-form in cross section,offsetting the margin knife tang from its central web to provide a tablereceiving recess, enabling the table surface to be alined flush with theplane upper tank side 8. The knife is secured to a hub disk 9, which issupported upon a boss projecting from the cross-Web 5, and secured to avertical shaft 10 journaled in said web.

Manual means, as a hand wheel, is provided for revolving the knife, saidhand wheel being secured to the outer end of a horizontal' shaft 11journaled in the cross web 5. The inner end of the shaft 11 has abeveled gear 12, fixed thereon in mesh with a beveled pinion 13, fixedto the knife shaft 10, providing a direct drive between the hand wheeland knife. i

A curved guide plate 14. is secured to the cross-web 4, at 15, andextends upwardly to a point closely adjacent the cutting edge of theknife to guide or direct the slice downwardly and away from the drivegears.

The table section 16 is' represented as a dish formation of a circularoutline to provide offset marginal sides 17, defining longitudinal sidewalls 18 for confining the sl1cing area laterally. It has a portionthereof cut away, visible in Fig. 1, for clearancefor the knife and forcontinuity of travel of the material bulk from one table section to thesecond, and also, for the purpose of seating the forward table edgewithin the knife recess and approximately flush with the upper surfaceof the knife tang. The table section 16 is secured by thumb screws 19,to

lugs 20, which project upwardly from the .Patented Apr. 2, 1913..Application led September 10, 1915. Serial 110,451,956.

2l of said table section is secured upon a bracket plate 22, fixed to avertical supporting rod 23, said rod being slidably supported withinlaterally extended spaced portions of the cross-web G. To guide the baseplate 21 in its vertical movements' of adjustment and confine the tableagainst rotation, lf provide screws 24 screw threaded into the rails 1,and engaging the side walls 25 of the base plate. rl`he rod and itselements are adjusted vertically by a cam lever 26, having a tubular orsleeve portion 27 straddlcd by the cross-web 6, to confine the sameagainst longitudinal movement with the rod, although rotative thereon.The sleeve is provided with an angular slot 28, into which a radiallyprojected pin 29, fixed into the rod, engages and slides, the angle ofthe walls of the slot determining the degree of adjustment of the tablein an oscillating movement ofv 'the lever. The lever 26 has an indicatorpoint 30 projected therefrom, which moves over an indicator dial 31, projecting from the web G. Thus by swinging the lever either to the rightor left, the front table section can be elevated or lowered and can be.delicately adjusted, cordinate to the cutting-plane of the knife todetermine the thickness of the slice and maintain it in its adjustedposition. The glass surface plate 3:2 is supportedon the base plate 21and is confined against lateral displacement by the side walls thereof.A pair of retaining plates 33 engage 'the longitudinal' upper edges ofthe surface plate t0 prevent vertical movement thereof, said .retainingplates ,extending beyond the front edge of the surface plate, at whichpoint they are provided with inturned abutment luos 34. The surfaceplate 32 has a circular ,beveled rear edge which is engaged by an-upturned lip 35 of a clamp slide 86, which is slidably mounted in arecess in the base plate 21 and provided with screw threaded translatormeans 36a for translating the clamp slide to clamp the surface plateagainst the abutment lugs 34. rlhe retaining plates 33 are adj ustablyclamped to the side walls 25 of the base plate Q1 by bolts 37 secured insaid plates and projecting through elongated slots 38 in the side wallsof the base plate. This permits a longitudinal adjustment of the surfaceplate relative to the knife.

Means are combined with the machine for grinding or sharpening the knifeat any time meeting the pleasure of the operator, or if sharpening isrequired, without removing any of the parts and operated by the handWheel rotating the knife. The sharpening attachment is permanentlylocated on the machine and is readily thrown into and out of commission.It is supported at the rear medial portion of the machine below theknife and dependingly from the crossneen-13e web 4 and horizontal jdrive shaft 11. .4. bracket arm 40 loosely journaled on the shaft 11projects downwardly and rearwardly and has looselyl journaled in itslower end a rock shaft 41, to which is secured an ll-bracket arm 42.Rotatively journaled in the bracket arm 42 is a shaft 43, on one end ofwhich is detachably'secured a grinding wheel 44, the other end havingfixed thereto a gear pinion 45, adapted to be thrown into mesh with agear wheel 46 secured to the inner face of the4 hand wheel 47. 'Thebracket arm 42 has secured thereto a handle 48 which extends inwardly asat 49, and is provided with a laterally 'projecting pin 50, normallyengaged into a retaining notch 51, formed in a guide plate 52 secured toand projecting downwardly from the cross-web 4. 'lhe notch 51 mergesinto a guide slot 53, which is concentric with the shaft 11 and servesto hold the pinion 45 in mesh with gear 46 during the vertical travel ofthe grinding attachment. A coil spring 54 surrounds the rock shaft 41,one end being secured to the shaft, and the other end secured to 'thebracket 42. This spring exerts its tension to hold the pin 50 in theretaining notch 51. rlhe rock shaft 41 extends beyond the bearings ofthe bracket arm, see lfig. 3, and interposed between it and the frame 2is a spring 55 which exerts its tension to elevate the grindingattachment to bring the grinding wheel 44 into engagement with theknife. An adjustment screw 56 is mounted in the cross bar of the bracketarm 40, theV upper end engaging the cross-web 4 when the grindingattachment is in commission, to determine the degree of grinding contactbetween the grinding wheel 44 and knife.

1. ln a machine of the class described, a rotative grinding wheel,toggle lever means as a movable bearing support for the grinding wheel,yieldinglyurged to move said wheel toward a cutter, and one yieldinglyurged upon the other in a direction laterally to the motion toward thecutter, for maintaining said wheel in an inoperative position, a guidefor directing the motion of Said lever means, a main driving gear, and agear fixed t0 the axis of said grinding wheel movable therewith, toengage with said first-named gear for rotating the grinding wheel. r

2. ln a machine of the class described, a

rotative grinding wheel, toggle lever means' 1,261,136 v et fordetermining the limit of motion of said 'my name, as attested the tWosubscriblever means towarf'd Jglhe culiter, a divfmg ingWitnesses.'lgear, and a er -Xe to t eaXis'o said.- 4 t grindng-xvhr movabletherewith, .to sny Y ALBERT-KRAUTH' V5 ga-gewth the 'sad-rst-named gearand n Witnesses: l V

mesh ,toward the cutter. I f F. G. DEISBOH,

yIn Witness whereof, I hereunto subscribe WM. KRAU'LH.v

